Variable translation speed feeding device for fabrics and the like



Jan. 24, 1939. 2,145,044

EVIGE FOR'FABRICS AND THE LIKE J. DUNGLER VARIABLE TRANSLATION SPEED FEEDING D Fil'ed Sept. 28, 1937 2 )Sheets-Sheet l INVENTOR JUL/EN DUNGLER ATTORNEYS J. DUNGLER VARIABLE TRANSLATION SPEED FEEDING DEVICE FOR FABRICS AND THE LIKE Filed Sept. 28, 193'! 2 Sheets-Sheet 2 INVENTOR JUL/EN DUNGLER B ATTORNEYS I Patented Jan. 24, 1939 UNITED STATES PATENT OFFICE VARIABLE TRANSLATION SPEED FEIJDING: DEVICE FOR FABRICS AND THE LIKE Julien Dungler, Thann, France Application September 28, 1937, Serial no. 166,130 In France 8, 1936 4" Claims. (01. 26-57) The invention relates tothe'feeding or introducing, in machines, of all products of great length such as fabrics, paper, or like products of similar nature.

It concerns more particularly the feeding or introducing of the fabrics in textile machines such as, inter alia and in. particular, tentering machines, drying drums, finishing. machines, etc.

' It is known that the feeding or supplying devices used at the present time have the drawback of being complicated and costly and of generally necessitating considerable and also costly transformations of the machines to which they are applied.

On the contrary, the device which is the object of the invention has the advantages of being extremely simple and not very costly to manufac ture, of no longer necessitating the use of speed gear boxes, of enabling the speed of translation of the product to be varied at will during the actual operation of the machine while maintaining such operation constant, and also of being applicable to any machine .without modifying the latter.

that it has in principle, and for each edge or-selvedge of the product,- a simple or multiple memher which plays-the dual part of speed changing device and of fabric feeding device, is driven by the machine to which the devive is applied and has zones or sections of which the diameters progressively, increase towards the said edge, in combination with a presser member mounted for longitudinal movement parallel with the axis of the feeding member, the fabric, paper or the like of which the edges pass between the feeding members and the presser members being thus fed at a linear speed:of translation corresponding to the peripheral speed of the circumferences of the zones or sections of the feeding members with which the edges of the product are placed in contact by the presser members.

Embodiments of the invention are described hereinafter and illustrated diagrammatically in,

theaccompanying drawings in which:

Fig. 1 is a front view ofa device applied to the inlet of a pins tenter, for the purpose of overfeeding the machine with cloth.

Fig. 2 is an end elevation thereof.

Fig. 3 is a front view of a device constructed according to the same principle and placed at the inlet of an automatic clips tenter;

Fig. 4 is an end elevation thereof; and *Fig. 5 is a plan view of the same.

. The device has a shaft l which is driven at con- Said feeding device is characterized by the fact stant speed by the actual machine to which it is applied.

On said shaft l are mounted the feeding members comprising two conical sleeves 2 which are slidably keyed on saidshaft so as to rotate in unison with same while being axially displaceable so as to modify the distance between them according to the width to be fed. 1

The speed of rotation of the shaft I is so chosen that the peripheral speed of the cones 2 at their medial portion corresponds to that of the tenter] frame.

To each of the said cones there corresponds a presser niember which is adapted to be longitudinally displaced while being held pressed against said cone.

With regard to the device of Figs. 1 and 2, this presser member comprises a roller 8 the rim of which is preferably covered with rubber to ensure a v better adherence and consequently a better feed of the cloth. Said roller 8 is mounted at one end of an oscillating bell crank lever 4, the other end of which carries a counterweight 5.

The fulcrum pins 8 of these levers 4, which are held in supports secured to those carrying the guide' wheels of the tenter chains, enable the rollers 8 to be displaced by means of a thread formed on the pins 6 which can be rotated in their support by means of a knurled knob 1.

A roll 8 mounted parallel adjacent the roll I I and adapted to receive the cloth, is driven direct by'the said roll I by means, for example, of spur pinions 9, 9', the linear speed given said roll 8 being at least equal to or slightly greater than the peripheral speed of the large base of the cones 2, the speed of rotation of which is that of the. roll I. In the present case or application of this devic'e as thus constructed to a pins tenter, circular brushes I 0 which can rotate freely or be driven are provided and mounted above the pins chains ll of the tenter frame'which pass around the guide wheels I2, said brushes being arranged an such a manner that they penetrate on the one hand intothe pins and that on the other hand they rub against the periphery of the roll 8.

This having been explained, the operation is as follows: I I

'The cloth which starts from a guide roll I3, passes through a pair of selvedge guides l4 having an oscillating movement for example, and passes, with its edges, round the cones 2 and the medial portion of the roll I, over the top of the roll 8 and is engaged, by its selvedges, on the pins of the chains I I by the'circular brushes l0.-

For a width of cloth of one meter, for example,

the chains at the entrance of the machine, ,are spacedabout 60 centimeters apart, the cloth passing in full width over the upper guide roll H, the two selvedge guiding devices I! operating by repulsion and holding the two selvedges in an aboslutely parallel position whereas the excess of cloth in width is repulsed into the medial part of the machine, forming/"a fold the amplitude of which will decrease; or increase according to the differences of width that may occur in the course of a same piece of cloth,.without for that reason destroying the parallelism of the selvedges.

The feeding cones 2, the small bases of which are facing each other, are arranged and adjusted along the roll I in such a manner that the selvedges pass around their periphery adjacent the large bases, and this has the further advantage of absorbing the possible slack of the said selvedges.

The presser rollers 3 are then placed in contact with the cloth which they press against the cones 2 owing to the action of the counterweights 5, or if necessary, underlthe action of springs.

Owing to this pressure of the rollers 3, the cloth adhering to the cones will be fed by its two edges, its linear speed of feed corresponding to the peripheral speed of the circumference of the portion of the cones against which the rollers 3 are bearing.

Consequently, if the diameter of the medial portion of the cones driven by the roll I whichis actuated direct by the tentering machine, gives a peripheral speed corresponding to the linear speed of the cloth over the tenter frame, and the rollers 3 are placed on said medial portions, it will be readily understood that the speed of input of or of feeding of the cloth will correspond to that of the tentering machine and that in practice an intake will be obtained without tension .but also without overfeed.

To obtain an overfeed of the cloth, it will suffice' to move the rollers 3 more or less along the cones 2 by means of the screws 6 and the knurled knobs 1, towards the large base of the said cones, whereas to obtain a tensioned intake, it will suffice on the contrary to move the rollers 3 more or less towards the small base of the cones 2 in the desired proportion.

To facilitate the marking of the speeds, the surface of the cones 2 can,-fr example, be provided with parallel circular grooves spaced along the length of the cones, each groove giving a definite percentage of feed, apart from the controlthat it is possible to obtain between said grooves by displacing the cones along their roll I and/or the knobs I along the cones.

In the embodiment, shown in Figs. 3 to 5, of a device placed at the inlet of a clips tenter, the presser member comprises a belt I5 passing over rollers l6 of which the axles are mounted on a support If. Said support I! is tapped and mounted on the threaded part of a spindle I! provided with a hand wheel l9; it is furthermore extended by an arm having a counterweight 20, this latter serving to press the belt I! against the cone 2. By rotating the hand wheel is, the support I] is displaced, together with the belt I5 and the rollers 16, along the surface of the The spindle l8 rests in a bearing 2| fixed a the inlet of the tentering machine 22. If the inlets of the tentering machine are moved, the supports l'l move with them together with the two cones 2, each of which is displaced by the fork 23 secured to the inlet of the tentering machine.

The spindle of the lower roller I6 is provided with a, second roller 24 which drives a roll 23 through the instrumentality of a belt 25 having a. tightener roller 26 provided with a counterweight 21. 29 having a counterweight 30.

The opening of the clips of the tenter frame is efiected by means of superposed plates 3|, one end of which penetrates deeply into the clips; these two plates 3| are spaced apart about 5 mm. and the cloth 32 slips in this space. Said plates 3| are arranged between the cones 2 and the drawing rolls 28, 29.

The operation of the apparatus is as follows:

The cloth 32 is introduced into the tentering machine by automatic selvedge guiding devices It which can be adjusted so as to operate by repulsion; the se'lvedges are located for example at A and A.

If the machine is started and the belts l5 are located for example in the middle of the length of the cones 2, the cloth 32 is introduced without .tension but also without overfeed. If said belts l5 are moved outwardsjthe speed of introduction of the cloth-increases relatively to the speed of the tentering machine. As the cloth which is drawn off by the rolls 28, 23 is conveyed into the clips by slipping through the double plate 3|, any danger of irregular intake is avoided.

Applicant has thus succeeded with this apparatus in giving creped fabrics up to 18% of overfeed, whereas for sateens it has been possible to obtain 5% to 6% lengthwise shrinkage.

-It is of course understood that without ex- On the roll 28 rests an upper roll ceeding the spirit of the invention, changes, im-

provements and additions can be made and also the use of equivalent means can be contemplated.

I claim:

1. The device for feeding fabrics, paper and the like to machines, said device comprising a driven shaft, a separate conical sleeve for each side edge of the fabric, said sleeve being shiftable in the longitudinal direction of said shaft and rotatable therewith, the diameter of said conical sleeve increasing toward the adjacent end of said shaft, and a separate presser member for each sleeve, said member being movable in the longitudinal direction of said sleeve and pressing the side edge of the fabric against said sleeve, whereby the speed of the feeding of the fabric is adjustable without steps by shifting the presser member relatively to the sleeve.

2. The device for feeding fabrics, paper and the like to machines, 'said device comprising a driven shaft, a separate conical sleeve for each side edge of the fabric, said sleeve being shiftable in the longitudinal direction of said shaft and rotatable therewith, the diameter of said conical sleeve increasing toward the adjacent end of said shaft, guide rolls situated adjacent said sleeve, and a belt extending over. said rolls, said rolls and said belt being movable in the longitudinal direction of said. sleeve, said belt pressing'the side edge of the fabric against said sleeve, whereby the speed of the feeding of the fabric is adjustable without steps by shifting said rolls and said belt relatively to the sleeve.

3. The devicefor feeding fabrics, paper ,and'

,the like to machines, said device comprising a driven shaft, a separate conical sleeve for each side edge of the fabric, said sleeve being shiftable in the longitudinal direction of s'aidshaft and rotatable therewith, the diameter of said conical sleeve increasing toward the adjacent end of said shaft, a separate presser member for each sleeve, said member being movable in the longitudinal direction of said sleeve and pressing the side edge of the fabric against said sleeve, whereby the speed of the feeding of the fabric is adjustable without steps by shifting the-presser member relatively to the sleeve, rolls for drawing the fabric, and means operatively connecting said rolls with said sleeve for driving said rolls.

4. The device for feeding fabrics, paper and the like to machines, said device comprising a in the longitudinal direction of said shaft and rotatable therewith, the diameter of said conical sleeve increasing toward the adjacent end of said shaft, a separate presser member for each sleeve, said member being movable in the longitudinal direction of said sleeve and pressing the side edge of the fabric against said sleeve, whereby the speed of the feeding of the fabric is ad- Justable without steps by shifting the presser member relatively to the sleeve, rolls operatively connected with said sleeve for drawing the fabric, and superposed plates for opening the clips of a tenter frame, said plates being situated between said sleeve and said rolls.

- JULIlllN DUNGLER. 

